Experimental testing of the dual-layer Woven EndoBridge device using an elastase-induced aneurysm model in rabbits

Yong Hong Ding, Daying Dai, Dana Schroeder, Ramanathan D Kadirvel, David F Kallmes

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The dual-layer Woven EndoBridge (WEB) device (WEB II) is designed to improve the performance of the first-generation WEB device. This study was performed to evaluate the acute and chronic performance of WEB II for aneurysm occlusion in an elastase-induced aneurysm model in rabbits. We implanted WEB II devices in 36 elastase-induced aneurysms and followed up for one, three, six, and 12 months. Degree of aneurysm occlusion at follow-up was graded on the Web Occlusion Scale (WOS): Grade A, complete aneurysm occlusion; Grade B, complete occlusion with recess filling; Grade C, residual neck filling; and Grade D, residual aneurysm filling. Hematoxylin and eosin staining was performed for histological assessment of aneurysm healing. Grades A, B, C, and D aneurysm occlusion at one-month follow-up were noted in three (17%), three (17%), eight (44%), and four (22%) of 18 cases, respectively. At the three-month time point Grades A, B, C, and D were shown in two (33%), two (33%), one (17%), and one (17%) aneurysms. Six months after treatment, one (17%), two (33%), two (33%), and one (17%) cases demonstrated Grades A, B, C, and D occlusion. At the 12-month time point, Grades B, C, and D were shown in three (50%), two (33%), and one (17%) aneurysms. Histologic evaluation showed progressive thrombus organization within aneurysm lumen from one to 12 months. These results indicated that the WEB II device can achieve high rates of aneurysm occlusion over time in experimental aneurysms.

Original languageEnglish (US)
Pages (from-to)299-303
Number of pages5
JournalInterventional Neuroradiology
Volume22
Issue number3
DOIs
StatePublished - 2016

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Pancreatic Elastase
Aneurysm
Rabbits
Equipment and Supplies
Hematoxylin
Eosine Yellowish-(YS)
Thrombosis
Neck

Keywords

  • Aneurysm
  • animal model
  • device

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine

Cite this

Experimental testing of the dual-layer Woven EndoBridge device using an elastase-induced aneurysm model in rabbits. / Ding, Yong Hong; Dai, Daying; Schroeder, Dana; Kadirvel, Ramanathan D; Kallmes, David F.

In: Interventional Neuroradiology, Vol. 22, No. 3, 2016, p. 299-303.

Research output: Contribution to journalArticle

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